6. The weight of a box is 600 N. Calculate the pressure exerted by it if it makes
contact with a surface of area 30 cm2.
I
Answers
Answered by
6
Explanation:
Case (ii) : When the block is resting on 20cm×5cmface
Thrust= Weight of the brick
=500gwt
Area of constant (A)=20cm×5cm
Pressure exerted
(P
2
)=
Area
Thrust
=
20×5
500
∴P
2
=5gwtcm
−2
Case (iii) : When the block on 10cm×5cmface
Thrust= Weight of the brick =500g.wt.
Area of contact =10cm×5cm
Pressure=
Area
Thrust
= 10×5/500
P 3
=10gwtcm −2
∴ From the above three cases, it is clear that, as the area of contact decreases, the pressure exerted increases and is greater when the brick rests on its 10cm×5cm face.
Attachments:
Answered by
1
Explanation:
Weight = 600 N
Area = 30cm2
= 600÷30
= 20
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